it's like this.
by participating in it, you contribute to a thing that is inherently terrible for the environment. everyone gotta survive. there are worse ways to make a living.
but art is a little bit special. there is meaning behind it. and if your art has anything to do with being critical of modernity, and you attach it to a system that is ecologically horrendous by design, you are betraying your own work.
AND THEN I DON'T GOTTA LISTEN TO ANYTHING YOU SAY.
you might win some, but you just lost one. etc.
if you want a primer on the folly of humans, greed, mining the "aetherium" while destroying the natural world & fighting each other, please see hayao miyazaki's prescient 1986 masterpiece castle in the sky. then come back and tell me what you think about ethereum.
there is also a geopolitical component to cryptocurrency which makes everyone sane recoil in disgust, and cannot be unseen, but for brevity's sake here, environment alone is enough.
at VERY least make a separate persona. do it on the side. bit of robin hood action, fine. i can sort of barely accept the idea of this. take the money you make and reinvest it into your good work or the scene in general. many people fund their art with day jobs. art can be a vehicle for good change, and separating can be useful.
but attach your holy work to this gross thing, and then use any number of justifiers... no.
at that point you're not an artist anymore. you're an entertainer.